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    Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Drafting and Design Presentation Standards Manual Welding

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    Chapter 6Welding

    November 2011

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    Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Drafting and Design Presentation Standards Manual Welding

    TRADEMARKS ACKNOWLEDGEMENT

    Terms mentioned in this document that are known or understood to be trademarks, whetherregistered or not, have been identified. Where trademarks have been confirmed as registered inAustralia, this has been indicated by the addition of the symbol, otherwise the symbol isused. While all care has been taken to identify trademarks, users should rely on their owninquiries to determine trademark ownership. Use of a term in this document as a trademarkshould not be regarded as affecting the validity of any trademark.6

    IMPORTANT INFORMATION

    The requirements of this document represent Technical Policy of the department and containTechnical Standards. Compliance with the departments Technical Standards is mandatory forall applications for the design, construction, maintenance and operation of road transportinfrastructure in Queensland by or on behalf of the State of Queensland.

    This document will be reviewed from time to time as the need arises and in response toimprovement suggestions by users. P lease send your comments and suggestions to thefeedback email given below.

    FEEDBACK

    Your feedback is welcomed. Please send to [email protected].

    DISCLAIMER

    This publication has been created for use in the design, construction, maintenance andoperation of road transport infrastructure in Queensland by or on behalf of the State ofQueensland.

    Where the publication is used in other than the departments infrastructure projects, the State ofQueensland and the department gives no warranties as to the completeness, accuracy oradequacy of the publication or any parts of it and accepts no responsibility or liability upon anybasis whatever for anything contained in or omitted from the publication or for theconsequences of the use or misuse of the publication or any parts of it.

    If the publication or any part of it forms part of a written contract between the State ofQueensland and a contractor, this disclaimer applies subject to the express terms of thatcontract.

    COPYRIGHT

    Copyright protects this publication. Except for the purposes permitted by and subject to theconditions prescribed under the Copyright Act, reproduction by any means (including electronic,mechanical, photocopying, microcopying or otherwise) is prohibited without the prior writtenpermission of the department. Enquiries regarding such permission should be directed to theContracts and Technical Capability Branch, Queensland Department of Transport and MainRoads.

    State of Queensland (Department of Transport and Main Roads) 2011

    http://creativecommons.org/licences/by-nc-nd/2.5/au

    November 2011

    ii

    http://creativecommons.org/licences/by-nc-nd/2.5/auhttp://creativecommons.org/licences/by-nc-nd/2.5/auhttp://creativecommons.org/licences/by-nc-nd/2.5/au
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    Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Drafting and Design Presentation Standards Manual Welding

    Volume Contents

    Chapter 1

    Introduction

    Chapter 11

    General Arrangement Drawings

    Chapter 2

    Standard of Presentation

    Chapter 12

    Abutments and Piers

    Chapter 3

    Concrete and Reinforcement

    Detailing

    Chapter 13

    Provision for Bridge J acking,

    Inspection and Maintenance

    Chapter 4

    Computer Preparation ofSteel Schedules

    Chapter 14

    Prestressed Concrete Girders

    Chapter 5

    Notes

    Chapter 15

    Prestressed Concrete Deck Units

    Chapter 6

    Welding

    Chapter 16

    Piles and Footings

    Chapter 7

    Deck Wearing Surface

    Chapter 17

    Cast Insitu Kerbs and Decks

    Chapter 8

    Bridge Widening

    Chapter 18

    Expansion J oints and

    Miscellaneous Details

    Chapter 9

    Bridge Deck Types

    Chapter 19

    Bridge Barriers

    VOLUME3

    Chapter 10

    Bridge Geometry

    Chapter 20

    Electronic Project Model (EPM)

    6

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    Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Drafting and Design Presentation Standards Manual Welding

    Table of Contents

    6.1 Glossary of Terms 16.2 Figures and Examples shown in this Volume 1

    6.3 Notes Format 1

    6.4 Welding of Stainless Steel 1

    6 6.5 Welding Splice of Reinforc ing Bar 16.6 Direct Butt Splice & Anchorage Splice Welds for Reinforc ing Bar 3

    6.7 Welding Symbols 4

    6.8 Presentation Details 4

    6.9 References 9

    List of Tables and Figures

    Table 6.5-1 Welded Lap Lengths - One Side of Bar Welded 2

    Table 6.5-2 Welded Lap Lengths - Both Sides of Bar Welded 2

    Figure 6.5-3 Welded Splice 2

    Figure 6.7-1 Standard Location of Elements of a Welding Symbol 4

    Figure 6.8-1 Basic Elements of a Weld Symbol 5

    Figure 6.8-2 Determining Size of a Fillet Weld 5

    Figure 6.8-3 Weld on Arrow Side of Join t 6

    Figure 6.8-4 Weld on Both Sides of Join t 6

    Figure 6.8-5 Intermit tent or Stitch Welds 7

    Figure 6.8-6 But t Weld 7

    Figure 6.8-7 Bridge Traffic Barrier Post to Base Plate 8

    Figure 6.8-8 Combination Butt and Fillet Welds 8

    Figure 6.8-9 Bridge Traffic Barrier Post to Anchor Plate 9

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    Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Drafting and Design Presentation Standards Manual Welding

    Chapter 6 Amendments November 2011

    Revision Register

    Issue/

    Rev

    No.

    Reference

    Section

    Descript ion of Revision Authorised

    by

    Date

    1 - First Issue. Manager

    (Structural

    Drafting)

    April

    2011

    2 -

    6.8

    Document name change.

    Weld preparation details amended in Figures6.8-7 and 6.8-8.

    Manager

    (Structural

    Drafting)

    Nov

    2011

    6

    7

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    Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Drafting and Design Presentation Standards Manual Welding

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    Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Drafting and Design Presentation Standards Manual Welding

    Chapter 6

    Welding6.1 Glossary of Terms

    For a complete glossary of terms referChapter 1 - Introduction.

    66.2 Figures and Examples shown in this VolumeThe figures and examples shown in this volume are for presentation purposes only, and may

    contain some details that are now superseded. These details have been included for ease of

    reference, to illustrate typical solutions, and to show the required standard of draftingpresentation. The details are not to be used without an engineering check and certification by a

    Structural RPEQ to confirm that the details are appropriate for the specific project.

    6.3 Notes Format

    For general welding notes referChapter 5 - Notes. Show only the welding notes applicable to

    the details on the drawing.

    6.4 Welding of Stainless Steel

    Welds shall be Category 2B in accordance with AS/NZS 1554.6 - Structural Steel Welding

    Part 6: Welding Stainless Steels for Structural Purposes.

    6.5 Welding Splice of Reinforcing Bar

    Design Details

    The welded splice for a reinforcing bar shall be a flare-v-butt weld in accordance

    withAS 1554.3 - Structural Steel Welding.

    The diameter of the smallest bar is the controlling factor for the size of the weld.

    The minimum throat thickness (D) shall not be less than 0.25 x smallest bar diameter.

    The minimum width of the weld (W) shall not be less than 0.45 x smallest bar diameter.

    Welds are not permitted on a bent portion of a bar. Welds shall be kept clear of any bent portion

    of a bar by a minimum distance of twice the diameter of the bar being bent.

    Weld Tables for Welded Splice

    The following tables show welding requirements for nominated bar diameters. Refer Table

    6.5-1 Welded Lap Lengths - One Side of Bar Welded, Table 6.5-2 Welded Lap Lengths - Both

    Sides of Bar Welded, andFigure 6.5-3 Welded Splice. The preferred splice is a weld on both

    sides of the bar.

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    Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Structures Drafting Manual Welding

    Table 6.5-1 Welded Lap Lengths - One Side of Bar Welded

    Bar

    Diameter

    S

    (mm)

    D

    (mm)

    W

    (mm)

    Welding Consumable Weld Length (mm)

    (SP Category Weld)

    R10 5 3 6 100

    N12 6 3 6 110

    N16 8 4 7 150

    N20 10 5 9 180

    N24 12 6 11 220

    N28 14 7 13 260

    N32 16 8 15 290

    N36 18 9 16

    E4916, E4918 or W50X

    to AS/NZS 4855

    330

    6

    Table 6.5-2 Welded Lap Lengths - Both Sides of Bar Welded

    Bar

    Diameter

    S

    (mm)

    D

    (mm)

    W

    (mm)

    Welding Consumable Weld Length (mm)

    (SP Category Weld)

    R10 5 3 6 50

    N12 6 3 6 60

    N16 8 4 7 80

    N20 10 5 9 100

    N24 12 6 11 120

    N28 14 7 13 140

    N32 16 8 15 160

    N36 18 9 16

    E4916, E4918 or W50X

    to AS/NZS 4855

    180

    Figure 6.5-3 Welded Splice

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    Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Drafting and Design Presentation Standards Manual Welding

    November 2011

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    The following conditions apply:

    All welds to be SP category (note to be shown on drawings)

    Weld width "W" not shown on drawing

    4mm minimum throat thickness

    Minimum weld length on both sides of the bar shall be in accordance

    withAS 1554.3 - Structural Steel Welding Part 3: Welding of Reinforcing Steel, Table 3.2

    66.6 Direct Butt Splice & Anchorage Splice Welds forReinforcing BarThe preferred welding consumables for direct butt splice welds and anchorage splice welds for

    reinforcing bar are shown below:-

    Weld Type Detail Consumable

    Direct Butt

    Splice

    E5518, W55X

    or W62X to

    AS/NZS 4855

    Anchorage

    Splice

    E5518, W55X

    or W62X to

    AS/NZS 4855

    The following conditions apply:-

    All welds to be SP category (note to be shown on drawings)

    The Design Engineer shall nominate all the weld sizes, but the minimum throat thickness

    for anchorage splice welds shall be 4mm

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    Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Structures Drafting Manual Welding

    6.7 Welding Symbols

    Welding symbols on drawings are to conform to AS 1101.3 - Graphical Symbols for General

    Engineering Part 3: Welding and Non-destructive Examination.The standard location of elements of a welding symbol is shown in Figure 6.7-1 Standard

    Location of Elements of a Welding Symbol.

    6

    Figure 6.7-1 Standard Location of Elements of a Welding Symbol

    6.8 Presentation Details

    The following is a basic cross section of commonly detailed welding symbols that may be

    encountered on drawings.

    Examples have been provided on the following pages that cover most fillet weld and butt weld

    joints.

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    Figure 6.8-1 Basic Elements of a Weld Symbol

    Figure 6.8-2 Determining Size of a Fillet Weld shows how the size of a fillet weld is

    determined. Accurate measurement of fillet welds requires the use of a weld fillet gauge.

    Figure 6.8-2 Determining Size of a Fillet Weld

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    Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Structures Drafting Manual Welding

    The following sketch shows a 6mm fillet weld is needed

    on the side of the joint that the arrow is pointing.

    6

    Figure 6.8-3 Weld on Arrow Side of Joint

    The following sketch shows a 6mm fillet

    weld is needed on both sides of the joint.

    Figure 6.8-4 Weld on Both Sides of Joint

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    Figure 6.8-5 Intermi ttent or Stitch Welds

    This symbol indicates that the two

    RHS components are to be joined by

    a full penetration vee butt weld allaround the joint.

    indicates full penetration

    indicates vee butt weld

    indicates all round the joint

    Figure 6.8-6 Butt Weld

    The weld shown in Figure 6.8-7 Bridge Traffic Barrier Post to Base Plate is a critical structural

    weld and its conformance to specification is vital to the performance of bridge traffic barrier

    posts under load. This is a complete penetration butt weld (compound butt weld placed first

    followed by a fillet weld). Refer Figure 6.8-8 Combination Butt and Fillet Welds for

    description.

    The weld shown in Figure 6.8-9 Bridge Traffic Barrier Post to Anchor Plate describes the

    welds to connect the bridge traffic barrier posts and anchor plates.

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    Department of Transport and Main Roads Structural Drafting Standards - Volume 3 - Chapter 6Structures Drafting Manual Welding

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    Figure 6.8-7 Bridge Traffic Barrier Post to Base Plate

    Figure 6.8-8 Combination Butt and Fil let Welds

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    Figure 6.8-9 Bridge Traffic Barrier Post to Anchor Plate

    6.9 References

    Drafters should be familiar with the following Australian Standards:-

    AS 1101.3-2008 - Graphical Symbols for General Engineering Part 3: Welding and

    Non-destructive Examination

    AS/NZS 1554.1-2004 - Structural Steel Welding Part 1: Welding of Steel Structures

    AS/NZS 1554.3-2008 - Structural Steel Welding Part 3: Welding of Reinforcing Steel

    AS/NZS 1554.6-1994 - Structural Steel Welding Part 6: Welding Stainless Steels for

    Structural Purposes

    AS/NZS 1665-2004 - Welding of Aluminum Structures

    AS/NZS 4855-2007 - Welding consumables Covered Electrodes for Manual Metal Arc

    Welding of Non-alloy and Fine Grain Steels - Classification